1. Validation of self-reported figural drawing scales against anthropometric measurements in adults.
- Author
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Dratva, Julia, Bertelsen, Randi, Janson, Christer, Johannessen, Ane, Benediktsdóttir, Bryndis, Bråbäck, Lennart, Dharmage, Shyamali C, Forsberg, Bertil, Gislason, Thorarinn, Jarvis, Debbie, Jogi, Rain, Lindberg, Eva, Norback, Dan, Omenaas, Ernst, Skorge, Trude D, Sigsgaard, Torben, Toren, Kjell, Waatevik, Marie, Wieslander, Gundula, and Schlünssen, Vivi
- Subjects
BODY mass index ,WAIST circumference ,HEALTH of adults ,SELF-evaluation ,RECEIVER operating characteristic curves ,OBESITY ,ANTHROPOMETRY ,COMPARATIVE studies ,LONGITUDINAL method ,RESEARCH methodology ,MEDICAL cooperation ,REFERENCE values ,RESEARCH ,EVALUATION research ,DIAGNOSIS - Abstract
Objective: The aim of the present study was to validate figural drawing scales depicting extremely lean to extremely obese subjects to obtain proxies for BMI and waist circumference in postal surveys.Design: Reported figural scales and anthropometric data from a large population-based postal survey were validated with measured anthropometric data from the same individuals by means of receiver-operating characteristic curves and a BMI prediction model.Setting: Adult participants in a Scandinavian cohort study first recruited in 1990 and followed up twice since.Subjects: Individuals aged 38-66 years with complete data for BMI (n 1580) and waist circumference (n 1017).Results: Median BMI and waist circumference increased exponentially with increasing figural scales. Receiver-operating characteristic curve analyses showed a high predictive ability to identify individuals with BMI > 25·0 kg/m2 in both sexes. The optimal figural scales for identifying overweight or obese individuals with a correct detection rate were 4 and 5 in women, and 5 and 6 in men, respectively. The prediction model explained 74 % of the variance among women and 62 % among men. Predicted BMI differed only marginally from objectively measured BMI.Conclusions: Figural drawing scales explained a large part of the anthropometric variance in this population and showed a high predictive ability for identifying overweight/obese subjects. These figural scales can be used with confidence as proxies of BMI and waist circumference in settings where objective measures are not feasible. [ABSTRACT FROM AUTHOR]- Published
- 2016
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